As a practical matter, most foreign students are going to opt for an
FAA-approved school anyhow, because they tend to be located in places
(Florida, Arizona) most congenial for full-time teaching, especially
in the winter.

Choose your state (I would favor Arizona, but only from November to
April -- someone from the subcontinent might be more tolerant of the
heat) and look at the advertisements in AOPA Pilot, and you'll soon
narrow it down.

As a technical matter, the pilot certificate (it's not called a
license, because in itself it's not sufficient authority for the
individual to pilot an aircraft) is issued by the FAA after a written
test and a practical flight and oral examination with an approved
examiner. This is what makes it possible to take training on a local
basis from an individual instructor (CFI).

Good luck!

- all the best, Dan Ford

Wikipedia: the belief that 10,000 monkeys playing at
10,000 keyboards can create a reference work